Collapsible tumbler sleeve



FIG. 1 is a perspective view of a collapsible tumbler sleeve, showing mynew design;

FIG. 2 is a perspective view of the collapsible tumbler sleeve inpartially collapsed position; and,

FIG. 3 is a folded plan view of the collapsible tumbler sleeve incollapsed position.

The ornamental design for a collapsible tumbler sleeve, as shown anddescribed.